diff options
Diffstat (limited to 'js/src/jit/wasm32/Assembler-wasm32.h')
| -rw-r--r-- | js/src/jit/wasm32/Assembler-wasm32.h | 228 |
1 files changed, 228 insertions, 0 deletions
diff --git a/js/src/jit/wasm32/Assembler-wasm32.h b/js/src/jit/wasm32/Assembler-wasm32.h new file mode 100644 index 0000000000..cdf832d1b2 --- /dev/null +++ b/js/src/jit/wasm32/Assembler-wasm32.h @@ -0,0 +1,228 @@ +/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- + * vim: set ts=8 sts=2 et sw=2 tw=80: + * This Source Code Form is subject to the terms of the Mozilla Public + * License, v. 2.0. If a copy of the MPL was not distributed with this + * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ + +#ifndef jit_wasm32_Assembler_wasm32_h +#define jit_wasm32_Assembler_wasm32_h + +#include "mozilla/Assertions.h" + +#include <cstdint> + +#include "jit/Registers.h" +#include "jit/RegisterSets.h" +#include "jit/shared/Assembler-shared.h" +#include "jit/wasm32/Architecture-wasm32.h" +#include "js/Value.h" + +namespace js::jit { + +struct ImmTag : public Imm32 { + explicit ImmTag(JSValueTag mask) : Imm32(int32_t(mask)) {} +}; + +struct ImmType : public ImmTag { + explicit ImmType(JSValueType type) : ImmTag(JSVAL_TYPE_TO_TAG(type)) {} +}; + +class MacroAssembler; + +static constexpr Register StackPointer{Registers::StackPointer}; +static constexpr Register FramePointer{Registers::FramePointer}; + +static constexpr Register ReturnReg{Registers::invalid_reg2}; +static constexpr FloatRegister ReturnFloat32Reg = {FloatRegisters::invalid_reg}; +static constexpr FloatRegister ReturnDoubleReg = {FloatRegisters::invalid_reg}; +static constexpr FloatRegister ReturnSimd128Reg = {FloatRegisters::invalid_reg}; +static constexpr FloatRegister ScratchSimd128Reg = { + FloatRegisters::invalid_reg}; +static constexpr FloatRegister InvalidFloatReg = {FloatRegisters::invalid_reg}; + +struct ScratchFloat32Scope : FloatRegister { + explicit ScratchFloat32Scope(MacroAssembler& masm) {} +}; + +struct ScratchDoubleScope : FloatRegister { + explicit ScratchDoubleScope(MacroAssembler& masm) {} +}; + +static constexpr Register OsrFrameReg{Registers::invalid_reg}; +static constexpr Register PreBarrierReg{Registers::invalid_reg}; +static constexpr Register InterpreterPCReg{Registers::invalid_reg}; +static constexpr Register CallTempReg0{Registers::invalid_reg}; +static constexpr Register CallTempReg1{Registers::invalid_reg}; +static constexpr Register CallTempReg2{Registers::invalid_reg}; +static constexpr Register CallTempReg3{Registers::invalid_reg}; +static constexpr Register CallTempReg4{Registers::invalid_reg}; +static constexpr Register CallTempReg5{Registers::invalid_reg}; +static constexpr Register InvalidReg{Registers::invalid_reg}; +static constexpr Register CallTempNonArgRegs[] = {InvalidReg, InvalidReg}; +static const uint32_t NumCallTempNonArgRegs = std::size(CallTempNonArgRegs); + +static constexpr Register IntArgReg0{Registers::invalid_reg}; +static constexpr Register IntArgReg1{Registers::invalid_reg}; +static constexpr Register IntArgReg2{Registers::invalid_reg}; +static constexpr Register IntArgReg3{Registers::invalid_reg}; +static constexpr Register HeapReg{Registers::invalid_reg}; + +static constexpr Register RegExpTesterRegExpReg{Registers::invalid_reg}; +static constexpr Register RegExpTesterStringReg{Registers::invalid_reg}; +static constexpr Register RegExpTesterLastIndexReg{Registers::invalid_reg}; +static constexpr Register RegExpTesterStickyReg{Registers::invalid_reg}; + +static constexpr Register RegExpMatcherRegExpReg{Registers::invalid_reg}; +static constexpr Register RegExpMatcherStringReg{Registers::invalid_reg}; +static constexpr Register RegExpMatcherLastIndexReg{Registers::invalid_reg}; +static constexpr Register RegExpMatcherStickyReg{Registers::invalid_reg}; + +// Uses |invalid_reg2| to avoid static_assert failures. +static constexpr Register JSReturnReg_Type{Registers::invalid_reg2}; +static constexpr Register JSReturnReg_Data{Registers::invalid_reg2}; +static constexpr Register JSReturnReg{Registers::invalid_reg2}; + +#if defined(JS_NUNBOX32) +static constexpr ValueOperand JSReturnOperand(Register{Registers::r2}, + Register{Registers::r3}); +static constexpr Register64 ReturnReg64(InvalidReg, InvalidReg); +#elif defined(JS_PUNBOX64) +static constexpr ValueOperand JSReturnOperand(InvalidReg); +static constexpr Register64 ReturnReg64(InvalidReg); +#else +# error "Bad architecture" +#endif + +static constexpr Register ABINonArgReg0{Registers::invalid_reg}; +static constexpr Register ABINonArgReg1{Registers::invalid_reg}; +static constexpr Register ABINonArgReg2{Registers::invalid_reg}; +static constexpr Register ABINonArgReg3{Registers::invalid_reg}; +static constexpr Register ABINonArgReturnReg0{Registers::invalid_reg}; +static constexpr Register ABINonArgReturnReg1{Registers::invalid_reg}; +static constexpr Register ABINonVolatileReg{Registers::invalid_reg}; +static constexpr Register ABINonArgReturnVolatileReg{Registers::invalid_reg}; + +static constexpr FloatRegister ABINonArgDoubleReg = { + FloatRegisters::invalid_reg}; + +static constexpr Register WasmTableCallScratchReg0{Registers::invalid_reg}; +static constexpr Register WasmTableCallScratchReg1{Registers::invalid_reg}; +static constexpr Register WasmTableCallSigReg{Registers::invalid_reg}; +static constexpr Register WasmTableCallIndexReg{Registers::invalid_reg}; +static constexpr Register InstanceReg{Registers::invalid_reg}; +static constexpr Register WasmJitEntryReturnScratch{Registers::invalid_reg}; +static constexpr Register WasmCallRefCallScratchReg0{Registers::invalid_reg}; +static constexpr Register WasmCallRefCallScratchReg1{Registers::invalid_reg}; +static constexpr Register WasmCallRefReg{Registers::invalid_reg}; + +static constexpr uint32_t ABIStackAlignment = 4; +static constexpr uint32_t CodeAlignment = 16; +static constexpr uint32_t JitStackAlignment = 8; +static constexpr uint32_t JitStackValueAlignment = + JitStackAlignment / sizeof(Value); + +static const Scale ScalePointer = TimesOne; + +static constexpr uint32_t Int32SizeLog2 = 2; + +struct MemoryArgument { + uint32_t align; + uint32_t offset; +}; + +class AssemblerWasm32 : public AssemblerShared {}; + +class Assembler : public AssemblerWasm32 { + public: + enum Condition { + Equal, + NotEqual, + Above, + AboveOrEqual, + Below, + BelowOrEqual, + GreaterThan, + GreaterThanOrEqual, + LessThan, + LessThanOrEqual, + Overflow, + CarrySet, + CarryClear, + Signed, + NotSigned, + Zero, + NonZero, + Always, + }; + + enum DoubleCondition { + DoubleOrdered, + DoubleEqual, + DoubleNotEqual, + DoubleGreaterThan, + DoubleGreaterThanOrEqual, + DoubleLessThan, + DoubleLessThanOrEqual, + DoubleUnordered, + DoubleEqualOrUnordered, + DoubleNotEqualOrUnordered, + DoubleGreaterThanOrUnordered, + DoubleGreaterThanOrEqualOrUnordered, + DoubleLessThanOrUnordered, + DoubleLessThanOrEqualOrUnordered + }; + + static Condition InvertCondition(Condition) { MOZ_CRASH(); } + + static DoubleCondition InvertCondition(DoubleCondition) { MOZ_CRASH(); } + + template <typename T, typename S> + static void PatchDataWithValueCheck(CodeLocationLabel, T, S) { + MOZ_CRASH(); + } + static void PatchWrite_Imm32(CodeLocationLabel, Imm32) { MOZ_CRASH(); } + + static void PatchWrite_NearCall(CodeLocationLabel, CodeLocationLabel) { + MOZ_CRASH(); + } + static uint32_t PatchWrite_NearCallSize() { MOZ_CRASH(); } + + static void ToggleToJmp(CodeLocationLabel) { MOZ_CRASH(); } + static void ToggleToCmp(CodeLocationLabel) { MOZ_CRASH(); } + static void ToggleCall(CodeLocationLabel, bool) { MOZ_CRASH(); } + + static void Bind(uint8_t*, const CodeLabel&) { MOZ_CRASH(); } + + static uintptr_t GetPointer(uint8_t*) { MOZ_CRASH(); } + + static bool HasRoundInstruction(RoundingMode) { return false; } + + void verifyHeapAccessDisassembly(uint32_t begin, uint32_t end, + const Disassembler::HeapAccess& heapAccess) { + MOZ_CRASH(); + } + + void setUnlimitedBuffer() { MOZ_CRASH(); } +}; + +class Operand { + public: + explicit Operand(const Address&) { MOZ_CRASH(); } + explicit Operand(const Register) { MOZ_CRASH(); } + explicit Operand(const FloatRegister) { MOZ_CRASH(); } + explicit Operand(Register, Imm32) { MOZ_CRASH(); } + explicit Operand(Register, int32_t) { MOZ_CRASH(); } +}; + +class ABIArgGenerator { + public: + ABIArgGenerator() = default; + ABIArg next(MIRType) { MOZ_CRASH(); } + ABIArg& current() { MOZ_CRASH(); } + uint32_t stackBytesConsumedSoFar() const { MOZ_CRASH(); } + void increaseStackOffset(uint32_t) { MOZ_CRASH(); } +}; + +} // namespace js::jit + +#endif /* jit_wasm32_Assembler_wasm32_h */ |